/// @tags:
#include <cstdio>
#include <iostream>

using namespace std;

namespace BlueQuantum {

int const N = 100;

int n, T;
char p[N], q[N];

inline int main() {
  cin >> T;
  for (int n; T; --T) { cin >> n >> p >> q; 
  }
  return 0;
}

}  // namespace BlueQuantum

int main() {
#ifndef ONLINE_JUDGE
#ifdef LOCAL
  freopen("/tmp/CodeTmp/testdata.in", "r", stdin);
  freopen("/tmp/CodeTmp/testdata.out", "w", stdout);
#else
  freopen("「MdOI R4」Color.in", "r", stdin);
  freopen("「MdOI R4」Color.out", "w", stdout);
#endif
#endif

  ios::sync_with_stdio(false), cin.tie(NULL), cout.tie(NULL);
  return BlueQuantum::main();
}
